CE marking

An emergency stop pushbutton is to be incorporated on a machine (built in 1991) without CE marking. Is it now necessary to issue a declaration of conformity?

If it is merely a case of improving safety and no other changes have been made, then this is not deemed to be a significant change. As such there is no need to undergo a conformity assessment procedure. However it is necessary to comply with Annex I of the industrial safety regulations.